Pump unit adapted for attachment to an externally screw threaded, discharge opening bounding rim of a liquid container



FIG. 1 is a bottom perspective view showing my new design;

FIG. 2 is a top perspective view thereof;

FIG. 3 is a side elevational view thereof, shown at a reduced scale, and as viewed from the front in FIG. 1;

FIG. 4 is a side elevational view thereof, shown at a reduced scale, and as viewed from the rear of FIG. 1;

FIG. 5 is a side elevational view thereof, shown at a reduced scale, and as viewed from the right in FIG. 1;

FIG. 6 is a side elevational view thereof, shown at a reduced scale, and as viewed from the left in FIG. 1;

FIG. 7 is a top plan view thereof, shown at a reduced scale; and,

FIG. 8 is a bottom plan view thereof, shown at a reduced scale. 

The ornamental design for a pump unit adapted for attachment to an externally screw threaded, discharge opening bounding rim of a liquid container, as shown and described. 